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Carl D. Keith (left) and John J. Mooney at the award ceremony for the National Medal of Technology and Innovation for the invention, application and commercialization of the three-way catalytic converter (2003) The 1970 amendments to the Clean Air Act required significant reductions in hydrocarbon, carbon monoxide and nitrogen oxide emissions.
A three-way catalytic converter on a gasoline-powered 1996 Dodge Ram Simulation of flow inside a catalytic converter. A catalytic converter is an exhaust emission control device which converts toxic gases and pollutants in exhaust gas from an internal combustion engine into less-toxic pollutants by catalyzing a redox reaction.
A typical exhaust system. The parts' names translate as follows: Krümmer: manifold (in this case, the exhaust manifold); Hosenrohr: downpipe; Katalysator: catalytic converter; Mittelschalldämpfer: middle silencer (or center muffler); Vorschalldämpfer: front silencer (or pre-muffler); Nachschalldämpfer: rear silencer (or main muffler); Endrohr: tailpipe.
The catalytic converter is a device placed in the exhaust pipe, which converts hydrocarbons, carbon monoxide, and NO x into less harmful gases by using a combination of platinum, palladium and rhodium as catalysts. [16] There are two types of catalytic converter, a two-way and a three-way converter.
In addition, there were 16,660 insurance claims for catalytic converter thefts in 2020, a number that had increased to 64,701 by 2022. [5] [8] The report also stated that the highest rate for catalytic converter theft claims between 2020 and 2022 was California, with 24,102 thefts reported to insurers.
Use of leaded gas increased after World War II until it proved damaging to catalytic converters, which became required in the 1970s. Some of lead’s hazards were known long before it was banned ...
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